Wrench.



s. T. FARRELL.

WRENCH.

APPLICATYON FILED MAR. 14. 1916.

mmawtbz Patented Oct. .31, 1916.

wi/ meooeyfiu fly SYDNEY T. FARRELL, OF BOSTON, MASSACHUSETTS.

WRENCH.

Specification of Letters Patent.

Patent-ed Oct. 31, 1916 Application filed March 14, 1916. Serial No. 84,127.

To all whom it may concern: 1

Be it known that I, SYDNEY' T. FARBEIL, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented new and useful Improvements in \Vrenches, of which the following is a specification.

This invention relates to wrenches and has for its primary object the provision of a tool of this character which will include means for maximizing the gripping action of the clamping jaws against the object when turning the wrench in one direction and for slightly, lessening the pressure against one of the jaws when turning the wrench in an opposite direction. This a'rrangement of parts is preferred particularly when the wrench is used upon pipes, tubing or the like and it is desired to obtain ratchet-like gripping action of the jaws against the pipe during the turning opera- LJII.

Another object of the invention resides in the provision of a wrench including a relatively fixed jaw and a sliding jaw, the latter being designed and associated with the shank of the structure to permit said sliding jaw to be adjusted with ease and facility as the occasion demands.

\Vith the above and other objects in view which will appear as the nature of the invention is better understood, the same consists in the improved construction and novel arrangements of parts which will hereinafter be fully, described and particularly pointed out in the claims.

In the accompanying drawings has been illustrated a single and preferred form of the invention, it being, however, understood that no limitation is necessarily made'to the precise, structural details therein exhibited, but that changes, alterations and modifications-within the scope of the claims may be resorted to when desired.

In the drawings :Figure 1 is a side view of the wrench. Fig. 2 is an edge view thereof. Fig. 3 is a section on the line 3-3 of Fig. 2. Fig. 4 is a section on the line 4-4 of Fig. 3.

The wrench consists of a shank 1, of substantially U shaped formation as illustrated in Fig. 4, providing a central channel 2, which extends throughout the entire length of the shank along one side thereof. This shank is secured in any suitable well known manner to a handle 3. At the opposite end.

the channel 2 is extended for the entire.

width of the shank as at 4, to permit the tiltlng aw 5 to be projected operatively therethrough. The said tilting jaw is provided with a continuous shank 6, which is freely movable in the channel '2. A pivot pin 7 extends through the main fixed shank 1, and through the jaw 55, as clearly shown in Figs. 1 and 2.

The sliding jaw 8, is provided witha yoke 9, which freely receives the shank 1, and'this yoke also receives the tilting shank 6 therein as clearly shown in Fig. 4. A leaf.

spring 10' is secured'at 11, to the yoke portion of the sliding jaw 8, the said spring having a relatively free terminal 12, which I bears against the shank 6.. In this manner, it will be observed that by simply pressing the sliding jaw 8, along its surface 13, the

teeth 14 will be moved relatively to the co-' acting teeth 15;,formed along one edge of the mentioned "shank 1. Ordinarily, the teeth 14 are held actively engaged with the teeth 15 under the' action of the spring 10. It will be fully understood that when pressure is applied to the sliding jaw to sep-- arate the teeth 1% frorit the teeth 15, said jawmay be moved to the "t'equisite point relatively to the mating jaw 5, and on releasing such pressure, the sliding jaw will he automatically brought into co-acting contact with the teeth 15.

When pressure is applied to the in the directionofthe arrow (a), the companion jaws 5 and 8 will bebrought into maximum gripping engagement with the ob ect between said jaws, while when pres sure is applied to the handle 3 to move the same in the direction of the arrow (6), the

tilting jaw 5 will move to a slight extent handle 3,

relatively of the sliding jaw and as a'consequence thereof, the wrench may be quickly operated in substantially ratchet-like manner and a new purchase of the mating jaws againstthe pipe effected in quick succession.

This arrangement is preferred when working upon pipes, tubing or like bodies.

' I claim 1. A. wrench comprising, a fixed shank having a tilting jaw, a sliding jaw on the shank, means on the sliding jaw, and means on the shank, the latter co-acting with the first means to hold. the sliding jaw against movement in one direction upon said shank, the shank having a channel therein, and an integral portion formed on the tilting jaw and extending into said channel.

2. A Wrench comprising, a fixed shank having a tilting jaw, a sliding jaw on the shank, means on the sliding jaw, and means on the shank, the latter co-acting with-the first means to hold 'the sliding jaw against movement in one direction upon said shank, the shank having a channel therein, an integral portion formed on the tilting jaw and extending into said channel, and a spring carried by the sliding jaw and hearing against said integral portion and operating to hold the means of said sliding jaw in normal engagement with the means of said shank.

3. A Wrench comprising a shank having 20 ing jaw for movement laterally of the shank, 25 7 and mechanism for holding the sliding jaw against sliding movement in one direction.

In testimony whereof J, aflix my signature in presence of two witnesses.

SYDNEY T. FARRELL.

Witnesses:

CHARLES H. HADFIELD, FREDERICK L. FARRELL. 7 

